The first phase of Beijing S1 Line is 10.236km long, and the Changsha line is about 18.5km long. A total of 200 carriages are required. The purchased quality of aluminum for each carriage is estimated at 10t, and the total consumption of aluminum is about 2000t. Line S1 has a width of 3m and a length of 15m, which is wider and shorter than ordinary subway trains. Due to the low speed maglev train has a series of advantages, is the highest environmental excellent investment benefit of urban rail transit construction is the best solution, so the line in changsha and Beijing S1 line after the operation, China may be in the next 15 years in the construction of the national large and medium-sized cities in low-speed maglev wave of passenger line, which has become a new luminescent spot aluminum applications. China has mastered the design, manufacture and management of medium - and low-speed maglev trains. High-speed railway has become the golden card of China in the international market, and the medium-low speed maglev will soon become the second golden card of China in the international market.
Low-speed maglev train carriage structure can be used in aluminum alloy, steel, stainless steel or composite materials manufacturing, however, made of extruded aluminum FSW has the highest cost performance and investment efficiency, the large extrusion profiles with high-speed car body is the same, more than a dozen Chinese companies can be mass production, with the sheet metal for 5005, 5052, 5083, 6061, profile alloy is 5083, 6061, 6 n01, 6063, 6082, 7 n01, 7003, etc; The amount of casting aluminum alloy is less than 500kg per car, mainly ZL101 and EN-AL10SI8 alloy.
The high-speed maglev train introduced by China with German equipment and technology started operation in Pudong, Shanghai in 2003. It has not only operated safely until now, but also has fully mastered, digested and absorbed the introduced technology and innovated the production and control technology of high-speed, medium-low speed maglev train with safe and independent intellectual property rights.
China's maglev train is driven by the strong magnetic field and suspension generated by the permanent magnets at the bottom of the train. Such permanent magnets are made of the strong magnetic material Nd- Iron - boron (ND-FE-B). Neodymium is the home of rare earth metals, accounting for more than 80% of the world's total reserves and providing a strong resource support for the development of ND-FE-B alloys.
There are three kinds of maglev in the world: the German one, the Japanese one and the Chinese one, both of which require electricity to generate maglev power. China's permanent magnet suspension USES special permanent magnet materials and does not need any other power support. In any case, there is no contact between the vehicle body and the track, while the technology of Germany and Japan is in contact with the groove track without power supply. However, no matter what kind of technology is used for magnetic levitation, permanent magnets cannot be separated from each other, just in number. As long as the rails are, permanent magnets will be as long as they are.
Now, there are maglev trains in China, there are also called maglev, the author thinks it is better to call maglev trains and maglev technology, more concise.
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